- Scheduler completed.
- Added a wizard just for show, but there is no interesting cpu-scheduling policy to test it with - Better textual output. git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@842 3ecf2c5c-341e-0410-92b4-d18e462d057c
This commit is contained in:
parent
436e401ae8
commit
69c8341384
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@ -28,7 +28,7 @@
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#include "singleton.tcc"
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#include <glibmm/thread.h>
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#include <iostream>
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#include <cassert>
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#include <memory>
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@ -103,14 +103,13 @@ update_future_processes(unsigned int front, auto_ptr<ConcreteEnvironment>& next_
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DynamicProcess& dp = dynamic_cast<DynamicProcess&>(**it_ps);
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if(dp.get_arrival_time() == front)
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{
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front = dp.get_elapsed_time(); // == 0
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assert(front == 0);
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assert(dp.get_elapsed_time() == 0);
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typedef std::vector<DynamicThread*> DynamicThreads;
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DynamicThreads dts = dp.get_dynamic_threads();
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for(DynamicThreads::const_iterator it_dts = dts.begin(); it_dts != dts.end(); it_dts++)
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{
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DynamicThread& dt = **it_dts;
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if(dt.get_arrival_time() == front)
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if(dt.get_arrival_time() == dp.get_elapsed_time())
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{
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dt.set_state(Schedulable::state_ready);
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// in this way we will never have threads ready having remaining time == 0
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@ -195,7 +194,7 @@ advance_running_process_and_thread(unsigned int front, auto_ptr<ConcreteEnvironm
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}
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}
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// Introduces newly arrived threads.
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// Introduces newly arrived for(unsigned int i = 0; i < queue.size(); i++)
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// Postcondition:
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// for each process p in next_snapshot
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// (
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@ -475,13 +474,15 @@ build_ready_queue(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapsh
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{
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DynamicThread& dt = **it_dts;
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if(dt.get_state() == Schedulable::state_ready)
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{
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queue.append(dt);
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}
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}
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}
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}
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// returns false if and only if the snapshot contains a candidate running thread,
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// returns true if and only if the snapshot contains a candidate running thread,
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// the thread's state is state_running.
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static bool
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find_a_candidate(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapshot)
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@ -500,21 +501,21 @@ find_a_candidate(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapsho
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{
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DynamicThread& dt = **it_dts;
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if(dt.get_state() == Schedulable::state_running)
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return false;
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return true;
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}
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}
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}
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// if no process has been found, select the first on the ready queue.
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ReadyQueue& queue = next_snapshot->get_sorted_queue();
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if (queue.size() == 0)
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return true;
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return false;
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DynamicThread& candidate = dynamic_cast<DynamicThread&>(queue.get_item_at(0));
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candidate.set_state(Schedulable::state_running);
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// HACK HACK HACK
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// we do not remove the candidate from the ready queue. this information is useful
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// since we chose to set the last_aquisition and the last_release just after a
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// successful selection. see try_to_run().
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return false;
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return true;
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}
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@ -541,6 +542,16 @@ check_if_simulation_is_terminated(unsigned int front, auto_ptr<ConcreteEnvironme
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}
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static void
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print_queue(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapshot)
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{
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ReadyQueue& queue = next_snapshot->get_sorted_queue();
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for(unsigned int i = 0; i < queue.size(); i++)
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{
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std::cout << queue.get_item_at(i).get_name();
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}
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}
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@ -549,8 +560,7 @@ check_if_simulation_is_terminated(unsigned int front, auto_ptr<ConcreteEnvironme
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static bool
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try_to_run(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapshot)
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{
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printf("trying to run");
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bool success = true;
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bool success = false;
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typedef std::vector<Process*> Processes;
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Processes ps = next_snapshot->get_processes();
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for(Processes::const_iterator it_ps = ps.begin(); it_ps != ps.end(); it_ps++)
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@ -565,15 +575,17 @@ try_to_run(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapshot)
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DynamicThread& dt = **it_dts;
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if(dt.get_state() == Schedulable::state_running)
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{
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// this is our candidate
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success = true;
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// let's see if it is runnable or if it blocks:
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typedef std::vector<DynamicRequest*> DynamicRequests;
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DynamicRequests drs = dt.get_dynamic_requests();
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for(DynamicRequests::const_iterator it_drs = drs.begin(); it_drs != drs.end(); it_drs++)
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{
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printf("checking all requests");
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DynamicRequest& dr = **it_drs;
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// if it's time to do it, raise a request
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if(dr.get_state() == Request::state_future && dr.get_instant() == dt.get_elapsed_time())
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{
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printf("found a new request");
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typedef std::vector<DynamicSubRequest*> DynamicSubRequests;
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DynamicSubRequests dsrs = dr.get_dynamic_subrequests();
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for(DynamicSubRequests::const_iterator it_dsrs = dsrs.begin(); it_dsrs != dsrs.end(); it_dsrs++)
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Environment::SubRequestQueue& queue = next_snapshot->get_request_queue(dsr.get_resource_key());
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/// Enqueue the subrequest at the back of the queue.
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queue.push_back(&dsr);
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printf("pushing back a request");
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/// TODO: right here, right now we should call the resource policy to
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/// update the queue. Updates the state of the subrequest depending
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@ -601,39 +612,44 @@ try_to_run(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapshot)
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dsr.set_state(Request::state_allocated);
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}
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}
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}
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} // end of request raising
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// if it does exist at least one unallocable request, the thread may not run!
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if (dr.get_state() == Request::state_unallocable)
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{
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dt.set_state(Schedulable::state_blocked);
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success = false;
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}
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}
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}
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// HACK HACK HACK
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// this check is legal, since all pointers in the sorted queue should be valid.
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// if the current thread is the first in the ready queue, we need to remove it
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if (next_snapshot->get_sorted_queue().size() != 0 &&
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&next_snapshot->get_sorted_queue().get_item_at(0) == &dt)
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{
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// in case of success in allocating the cpu, we must update the last_aquisition
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if (success)
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dt.set_last_acquisition(front);
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next_snapshot->get_sorted_queue().erase_first();
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}
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// if the current thread was the one that was previously running
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else
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{
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// we must update the last_release
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if (!success)
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dt.set_last_release(front);
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//cpu_policy.sort_queue();
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}
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}
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}
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}
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return success;
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}
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} // end for loop over all running thread requests
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// HACK HACK HACK
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// this check is legal, since all pointers in the sorted queue should be valid.
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// if the current thread is the first in the ready queue, we need to remove it
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if (next_snapshot->get_sorted_queue().size() != 0 &&
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&next_snapshot->get_sorted_queue().get_item_at(0) == &dt)
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{
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// in case of success in allocating the cpu, we must update the last_aquisition
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if (success)
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dt.set_last_acquisition(front);
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next_snapshot->get_sorted_queue().erase_first();
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} // if the current thread was the one that was previously running
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else
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{
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// we must update the last_release
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if (!success)
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dt.set_last_release(front);
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else
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return success;
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//cpu_policy.sort_queue();
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}
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} // end things to do if thread was running
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} // end for loop over all threads of a running process
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} // end if process is running
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} // end for loop over all processes
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return false;
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}// end main loop
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//.............................................................................
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//.............................................................................
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@ -686,32 +702,25 @@ Scheduler::step_forward(ConcreteHistory& concrete_history, CPUPolicy& cpu_policy
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build_ready_queue(next_instant, next_snapshot);
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// and pass it to the policy itself
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if (next_snapshot->get_sorted_queue().size() != 0)
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cpu_policy.sort_queue();
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// if (next_snapshot->get_sorted_queue().size() != 0)
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// cpu_policy.sort_queue();
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bool found = false;
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bool none_ready_or_running = false;
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bool simulation_terminated = false;
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bool running = false;
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bool idle = false;
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bool terminated = false;
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do
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{
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// If no thread is in running state, select a new thread to be
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// executed (so it changes its state from ready to running).
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// However, in case it hasn't to run for a strictly positive
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// amount of time, put it into terminated state. (??) Then try to
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// select a new schedulable, by jumping (??) to the point about
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// building the ready queue.
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none_ready_or_running = find_a_candidate(next_instant, next_snapshot);
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if (none_ready_or_running)
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simulation_terminated = check_if_simulation_is_terminated(next_instant, next_snapshot);
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if (find_a_candidate(next_instant, next_snapshot))
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running = try_to_run(next_instant, next_snapshot);
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else
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// Check pending requests for the running thread. If in the
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// current instant the thread does a new unfulfillable request,
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// put it in blocked state and jump (??) to the point about building
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// the ready queue
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found = try_to_run(next_instant, next_snapshot);
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if (check_if_simulation_is_terminated(next_instant, next_snapshot))
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terminated = true;
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else
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idle = true;
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}
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while (!found && !none_ready_or_running && !simulation_terminated);
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while (!running && !idle && !terminated);
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// append the new snapshot, releasing the auto_ptr!
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concrete_history.append_new_environment(next_snapshot.release());
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_policy = NULL;
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_ready_queue = NULL;
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return !simulation_terminated; // watch out for the !
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return !terminated; // watch out for the !
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}
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catch(UserInterruptException& e)
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{
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@ -0,0 +1,218 @@
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set cpu-policy 1
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add resource
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forchetta
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false
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1
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0
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add resource
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ashi
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false
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2
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0
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add resource
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dita
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false
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10
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0
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add process (name, arrival time, base priority)
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Toru
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1
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3
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add thread 1 (name, required cput time, arrival time, base priority)
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toru-kun
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4
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0
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3
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add process (name, arrival time, base priority)
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Yuki
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4
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2
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add thread 2 (name, required cput time, arrival time, base priority)
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yun-yun
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3
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0
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2
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add process (name, arrival time, base priority)
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Kyo
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4
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4
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add thread 3 (name, required cput time, arrival time, base priority)
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kyon-kyon
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1
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0
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4
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add process (name, arrival time, base priority)
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Shigure
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6
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0
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add thread 4 (name, required cput time, arrival time, base priority)
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gure
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1
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0
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0
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add request 4 1
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0
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add subrequest 4 1 1
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0
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1
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add subrequest 4 1 1
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2
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3
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add subrequest 4 1 1
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2
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4
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add process (name, arrival time, base priority)
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Kagura
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6
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5
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add thread 5 (name, required cput time, arrival time, base priority)
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kagura
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10
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0
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5
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add request 5 1
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0
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add subrequest 5 1 1
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0
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5
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add subrequest 5 1 1
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2
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3
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add request 5 1
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5
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add subrequest 5 1 2
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2
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3
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add subrequest 5 1 2
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2
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3
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add process (name, arrival time, base priority)
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Momiji
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12
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0
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add thread 6 (name, required cput time, arrival time, base priority)
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momiji-kun
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1
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0
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0
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add process (name, arrival time, base priority)
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Hatori
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14
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0
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add thread 7 (name, required cput time, arrival time, base priority)
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tori
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1
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0
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0
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add process (name, arrival time, base priority)
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Hatsuharu
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15
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0
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add thread 8 (name, required cput time, arrival time, base priority)
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haru
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1
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0
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0
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add process (name, arrival time, base priority)
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Ayame
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15
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0
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add thread 9 (name, required cput time, arrival time, base priority)
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aya
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6
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0
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0
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add request 9 1
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2
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add subrequest 9 1 1
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2
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3
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add subrequest 9 1 1
|
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2
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3
|
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add subrequest 9 1 1
|
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2
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3
|
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add subrequest 9 1 1
|
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2
|
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3
|
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add subrequest 9 1 1
|
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2
|
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3
|
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add subrequest 9 1 1
|
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2
|
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3
|
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add subrequest 9 1 1
|
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2
|
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3
|
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add subrequest 9 1 1
|
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2
|
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3
|
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add subrequest 9 1 1
|
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2
|
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3
|
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add subrequest 9 1 1
|
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2
|
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3
|
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|
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|
||||
|
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|
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|
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add process (name, arrival time, base priority)
|
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Kisa
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17
|
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0
|
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add thread 10 (name, required cput time, arrival time, base priority)
|
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kisa
|
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2
|
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0
|
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0
|
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|
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add request 10 1
|
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1
|
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add subrequest 10 1 1
|
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1
|
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3
|
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add subrequest 10 1 1
|
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2
|
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3
|
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|
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|
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add process (name, arrival time, base priority)
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Ritsu
|
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16
|
||||
0
|
||||
add thread 11 (name, required cput time, arrival time, base priority)
|
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ri
|
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2
|
||||
0
|
||||
0
|
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add request 11 1
|
||||
0
|
||||
add subrequest 11 1 1
|
||||
0
|
||||
1
|
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|
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|
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|
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run
|
|
@ -1,5 +1,4 @@
|
|||
set cpu-policy 3
|
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add resource
|
||||
|
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add resource
|
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forchetta
|
||||
|
|
|
@ -1476,19 +1476,19 @@ operator<<(ostream& os, Schedulable::state state)
|
|||
switch (state)
|
||||
{
|
||||
case Schedulable::state_running:
|
||||
os << "RUNNING";
|
||||
os << " RUNNING @";
|
||||
break;
|
||||
case Schedulable::state_ready:
|
||||
os << "READY";
|
||||
os << " READY ";
|
||||
break;
|
||||
case Schedulable::state_blocked:
|
||||
os << "BLOCKED";
|
||||
os << " BLOCKED ";
|
||||
break;
|
||||
case Schedulable::state_future:
|
||||
os << "FUTURE";
|
||||
os << " FUTURE ";
|
||||
break;
|
||||
case Schedulable::state_terminated:
|
||||
os << "TERMINATED";
|
||||
os << " TERMINATED ";
|
||||
break;
|
||||
default:
|
||||
os.setstate(ios_base::failbit);
|
||||
|
@ -1506,16 +1506,16 @@ operator<<(ostream& os, Request::state state)
|
|||
os << "UNALLOCABLE";
|
||||
break;
|
||||
case Request::state_allocated:
|
||||
os << "ALLOCATED";
|
||||
os << " ALLOCATED";
|
||||
break;
|
||||
case Request::state_future:
|
||||
os << "FUTURE";
|
||||
os << " FUTURE";
|
||||
break;
|
||||
case Request::state_exhausted:
|
||||
os << "EXHAUSTED";
|
||||
os << " EXHAUSTED";
|
||||
break;
|
||||
case Request::state_allocable:
|
||||
os << "ALLOCABLE";
|
||||
os << " ALLOCABLE";
|
||||
break;
|
||||
default:
|
||||
os.setstate(ios_base::failbit);
|
||||
|
@ -1529,13 +1529,6 @@ TextSimulation::update(const History& changed_history)
|
|||
{
|
||||
ostringstream oss;
|
||||
|
||||
/// since the history stores snapshots starting from
|
||||
/// and including instant -1, the first snapshot on
|
||||
/// the queue, i.e. changed_history[0] is actually
|
||||
/// the snapshot corresponding to instant -1.
|
||||
/// therefore, the last snapshot on the history refers
|
||||
/// to instant (history.get_size() - 2).
|
||||
// this is a damn uint, so we must hack and hack
|
||||
int printed_instant;
|
||||
|
||||
if (changed_history.get_size() > 1)
|
||||
|
@ -1561,17 +1554,45 @@ TextSimulation::update(const History& changed_history)
|
|||
|
||||
p_stdout("}\n");
|
||||
|
||||
p_stdout(_("RESOURCES:\n"));
|
||||
|
||||
|
||||
const Environment::Resources& resources = env.get_resources();
|
||||
const Environment::Processes& processes = env.get_processes();
|
||||
typedef Environment::Resources::const_iterator ResourceIt;
|
||||
|
||||
|
||||
std::string tab = " ";
|
||||
std::string::size_type max = tab.size();
|
||||
for (unsigned int pi = 0; pi < processes.size(); ++pi)
|
||||
{
|
||||
Process& p = *processes[pi];
|
||||
if (p.get_name().size() > max + tab.size() + tab.size())
|
||||
max = p.get_name().size() - tab.size() - tab.size();
|
||||
vector<Thread*> threads = p.get_threads();
|
||||
for (unsigned int ti = 0; ti < threads.size(); ++ti)
|
||||
{
|
||||
Thread& t = *threads[ti];
|
||||
if (t.get_name().size() > max + tab.size())
|
||||
max = t.get_name().size() - tab.size();;
|
||||
}
|
||||
|
||||
for (ResourceIt it = resources.begin(); it != resources.end(); ++it)
|
||||
{
|
||||
const Resource& r = *it->second;
|
||||
if (r.get_name().size() > max)
|
||||
max = r.get_name().size();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
p_stdout(_("RESOURCES:\n"));
|
||||
for (ResourceIt it = resources.begin(); it != resources.end(); ++it)
|
||||
{
|
||||
const Resource& r = *it->second;
|
||||
Environment::resource_key_t key = it->first;
|
||||
|
||||
oss << " " << key << ") " << r.get_name() << _(", with ");
|
||||
oss << " " << (key < 10 ? " " : "") << key << ". " << r.get_name() << _(", with ");
|
||||
|
||||
oss << r.get_places() << _(" places\n");
|
||||
|
||||
|
@ -1603,20 +1624,26 @@ TextSimulation::update(const History& changed_history)
|
|||
p_stdout(" }\n");
|
||||
}
|
||||
|
||||
p_stdout(_("PROCESSES:\n"));
|
||||
|
||||
|
||||
const Environment::Processes& processes = env.get_processes();
|
||||
|
||||
p_stdout(_("\nPROCESSES:"));
|
||||
Glib::ustring space_bar_1 = " ";
|
||||
space_bar_1.resize(max, ' ');
|
||||
p_stdout(space_bar_1);
|
||||
p_stdout(_(" state arrival requiring elapsed priority resource_id\n"));
|
||||
|
||||
for (unsigned int pi = 0; pi < processes.size(); ++pi)
|
||||
{
|
||||
Process& p = *processes[pi];
|
||||
|
||||
oss << " " << pi + 1 << ") " << p.get_name() << " ";
|
||||
oss << "[" << p.get_state() << "] ";
|
||||
oss << _("arriving at ") << p.get_arrival_time() << ", ";
|
||||
oss << _("requiring ") << p.get_total_cpu_time() << ", ";
|
||||
oss << _("elapsed ") << p.get_elapsed_time() << ", ";
|
||||
oss << _("priority ") << p.get_current_priority() << endl;
|
||||
Glib::ustring upname(p.get_name());
|
||||
upname.resize(max + tab.size() + tab.size(), ' ');
|
||||
oss << " " << (pi < 9 ? " " : "") << pi + 1 << ". " << upname;
|
||||
oss << " " << p.get_state();
|
||||
oss << _(" ") << (p.get_arrival_time() < 10 ? " " : "") << p.get_arrival_time();
|
||||
oss << _(" ") << (p.get_total_cpu_time() < 10 ? " " : "") << p.get_total_cpu_time();
|
||||
oss << _(" ") << (p.get_elapsed_time() < 10 ? " " : "") << p.get_elapsed_time();
|
||||
oss << _(" ") << (p.get_current_priority() < 10 ? " " : "") << p.get_current_priority() << endl;
|
||||
|
||||
p_stdout(oss.str());
|
||||
oss.str(string());
|
||||
|
@ -1627,12 +1654,14 @@ TextSimulation::update(const History& changed_history)
|
|||
{
|
||||
Thread& t = *threads[ti];
|
||||
|
||||
oss << " " << ti + 1 << ") " << t.get_name() << " ";
|
||||
oss << "[" << t.get_state() << "] ";
|
||||
oss << _("arriving at ") << t.get_arrival_time() << ", ";
|
||||
oss << _("requiring ") << t.get_total_cpu_time() << ", ";
|
||||
oss << _("elapsed ") << t.get_elapsed_time() << ", ";
|
||||
oss << _("priority ") << t.get_current_priority() << endl;
|
||||
Glib::ustring upname(t.get_name());
|
||||
upname.resize(max + tab.size(), ' ');
|
||||
oss << " " << tab << (ti < 9 ? " " : "") << ti + 1 << ". " << upname;
|
||||
oss << " " << t.get_state();
|
||||
oss << _(" ") << (t.get_arrival_time() < 10 ? " " : "") << t.get_arrival_time();
|
||||
oss << _(" ") << (t.get_total_cpu_time() < 10 ? " " : "") << t.get_total_cpu_time();
|
||||
oss << _(" ") << (t.get_elapsed_time() < 10 ? " " : "") << t.get_elapsed_time();
|
||||
oss << _(" ") << (t.get_current_priority() < 10 ? " " : "") << t.get_current_priority() << endl;
|
||||
|
||||
p_stdout(oss.str());
|
||||
oss.str(string());
|
||||
|
@ -1648,14 +1677,20 @@ TextSimulation::update(const History& changed_history)
|
|||
for (unsigned int sri = 0; sri < subrequests.size(); ++sri)
|
||||
{
|
||||
SubRequest& sr = *subrequests[sri];
|
||||
oss << _(" --> request ") << ri + 1 << "." << sri + 1 << ") ";
|
||||
oss << _("at ") << r.get_instant() << " ";
|
||||
ResourceIt point = resources.find(sr.get_resource_key());
|
||||
oss << _("for resource ") << (point->second)->get_name() << " ";
|
||||
oss << _("with id ") << sr.get_resource_key() << " ";
|
||||
oss << "[" << sr.get_state() << "] ";
|
||||
oss << _("requiring ") << sr.get_length() << ", ";
|
||||
oss << _("remaining ") << sr.get_remaining_time() << endl;
|
||||
|
||||
oss << " " << tab << " ";
|
||||
oss << (ri < 9 ? " " : "") << ri + 1 << "." << sri + 1 << (sri < 9 ? " " : "");
|
||||
|
||||
Glib::ustring upname((point->second)->get_name());
|
||||
upname.resize(max, ' ');
|
||||
oss << _(" ") << upname;
|
||||
oss << " " << sr.get_state();
|
||||
oss << _(" ") << (r.get_instant() < 10 ? " " : "") << r.get_instant();
|
||||
oss << _(" ") << (sr.get_length() < 10 ? " " : "") << sr.get_length();
|
||||
oss << _(" ") << (sr.get_length() - sr.get_remaining_time() < 10 ? " " : "") << sr.get_length() - sr.get_remaining_time();
|
||||
|
||||
oss << _(" ") << sr.get_resource_key() << " \n";
|
||||
|
||||
p_stdout(oss.str());
|
||||
oss.str(string());
|
||||
|
|
Loading…
Reference in New Issue